ASTROSAT CZTI

Data Quality Report

Orbit 01051

Creation date: 2024-06-27T14:06:43.729097
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1P01_998T02_9000000190_01051cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01051cztM0_level2_quad_clean.evt
Size (bytes)1,095,793,920112,769,280
Size1.0 GB 107.5 MB
Events in quadrant A7,802,192747,080
Events in quadrant B8,297,762752,326
Events in quadrant C7,839,349735,782
Events in quadrant D8,798,238708,460

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279712
B0294931
C0281141
D0309991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A677390.132881%
B6773180.265761%
C677370.103352%
D67732473.646833%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7648 6774 119 119 1.56% 1.76%
B 7648 6774 200 200 2.62% 2.95%
C 7648 6774 127 127 1.66% 1.87%
D 7648 6774 756 756 9.88% 11.16%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 36 25079 47.05 2027 2038 489.7
A 11 79 7324 10.8 2027 2038 489.7
A 3 111 6432 8.97 2027 2038 489.7
B 8 234 80481 155.51 2123 2132 503.8
B 15 22 41225 77.59 2123 2132 503.8
B 12 52 40041 75.24 2123 2132 503.8
C 15 241 328301 616.56 1901 1963 529.3
C 10 207 31773 56.32 1901 1963 529.3
C 3 111 25808 45.05 1901 1963 529.3
D 12 22 1284221 2289.04 1815 1874 560.2
D 1 83 596476 1061.39 1815 1874 560.2
D 10 125 42829 73.11 1815 1874 560.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter